/*
 * Copyright 2020-2024 Typelevel
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package cats.effect.std

import cats.effect.kernel.Sync

import scala.collection.immutable.Iterable

private[std] class EnvCompanionPlatform {
  private[std] final class SyncEnv[F[_]](implicit F: Sync[F]) extends Env[F] {

    def get(name: String): F[Option[String]] =
      F.delay(Option(System.getenv(name))) // sys.env copies the entire env into a Map

    def entries: F[Iterable[(String, String)]] = F.delay(sys.env)
  }
}
